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Sapphire and Gypsum Physical Properties


Gypsum and Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Flexible   

Solubility
insoluble   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.03   
2.20-2.40   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)   

Cleavage
None, but may exhibit parting   
Perfect on {010}, distinct on {100}   

Mohs Hardness
9   
2   

Chemical Composition
Al 2 O 3   
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)   

Optical Properties >>
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Sapphire and Gypsum Chemical Formula

While comparing Sapphire and Gypsum physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Sapphire and Gypsum chemical formula.

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Sapphire and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.

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